Re: [Elecraft] continuous relay click in RX ANT IN
Thanks Tom, I have the later version, will check with relays it have. Will install it, taking care of the amp relay control. I have the diagram to connect it right. Thanks ! 73, Jorge CX6VM/CW5W -Mensaje original- De: Tom W8JI [mailto:w...@w8ji.com] Enviado el: Martes, 13 de Julio de 2010 11:37 a.m. Para: Jorge Diez - CX6VM; 'Elecraft Reflector' Asunto: Re: [Elecraft] continuous relay click in RX ANT IN Seems is similar to this made from ICE, at least will add extra protection to the K3, what do you think? Or it will decrease the RX signals I can receive in the K3? As far as I know that unit uses reed relays, and should have no detectable loss. I think there might be two models of that, but I have only seen a reed relay version. The advantage of the one I saw is the low loss and no signal distortion using relays. You must run the amplifier relay control through it to be sure the protection sequence is correct. 73 Tom __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] continuous relay click in RX ANT IN
I found in my shack a Front End Saver http://www.radio-ware.com/products/fes.htm that I never installed. Seems is similar to this made from ICE, at least will add extra protection to the K3, what do you think? Or it will decrease the RX signals I can receive in the K3? Thanks, Jorge CX6VM/CW5W -Mensaje original- De: Brett Howard [mailto:br...@livecomputers.com] Enviado el: Domingo, 11 de Julio de 2010 10:29 p.m. Para: Jorge Diez - CX6VM CC: 'Tom W8JI'; 'Elecraft Reflector' Asunto: Re: [Elecraft] continuous relay click in RX ANT IN I had this going on too and a really slick way to fix the problem is with an RF limiter... http://www.iceradioproducts.com/reconly.html#rflimiter I.C.E. makes a very cost effective unit that gets the job done very well... I ordered the 196 unit and then I didn't want to have it with RCA connectors on it so I asked them to build it wit the BNC connectors like they do on the VHF unit. They had no problem with that and did so no extra cost. ~Brett (N7MG) On Sun, 2010-07-11 at 18:27 -0300, Jorge Diez - CX6VM wrote: ems is the proximity of the antennas. I was using a sloper for 160 mts from a 118ft tower and the 40-2CD was on top of this tower. So I couldnt connect the 40-2CD in the RX ANT IN. So I switch the knob in my sixpack to listen in the 40 and then switch again to TX on the 160 antenna, hope this will not cause a problem in the rig? Thanks! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] continuous relay click in RX ANT IN
Seems is similar to this made from ICE, at least will add extra protection to the K3, what do you think? Or it will decrease the RX signals I can receive in the K3? As far as I know that unit uses reed relays, and should have no detectable loss. I think there might be two models of that, but I have only seen a reed relay version. The advantage of the one I saw is the low loss and no signal distortion using relays. You must run the amplifier relay control through it to be sure the protection sequence is correct. 73 Tom __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] continuous relay click in RX ANT IN
I made an even more cost-effective one: I put a couple of diodes in parallel (anode to cathode) across the connector in the old coax switch I use for receiving antennas. I wrote FOR RECEIVE ONLY! on the switch in big letters. I can't do that here Vic because on most of my antennas the net power from the antennas results in a peak voltage much greater than 0.5 volts. .5 volts peak, which is the approximate conduction limit of a silicon rectifier like a 1N4007, is only 4 dBm That will turn your K3 into a Yaesu FT-101 for IM and even order performance. 73 Tom __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] continuous relay click in RX ANT IN
.5 volts peak, which is the approximate conduction limit of a silicon rectifier like a 1N4007, is only 4 dBm That will turn your K3 into a Yaesu FT-101 for IM and even order performance. Reminds me of my first Field Day in 1975 while in high school. Multiple stations, one per band, no amps. We couldn't understand why an incandescent lamp on the back panel of my friend's FT-101B was glowing brightly when stations on other bands were operating. As I recall, we had a reasonable distance between antennas. Of course, the lamp was there for overload protection and it didn't take much RF coupled back to the antenna to activate it. The FT-101B was absolutely unusable for FD. Being new into this at the time, we had not let discovered stub and filtering concepts but it was an important learning moment. Looking back, I cannot think of a receiver I've used that had poorer overload performance than the FT-101. For us K2/K3 owners, glad those days are long gone... Paul, W9AC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] continuous relay click in RX ANT IN
I was using a sloper for 160 mts from a 118ft tower and the 40-2CD was on top of this tower. So I couldn´t connect the 40-2CD in the RX ANT IN. So I switch the knob in my sixpack to listen in the 40 and then switch again to TX on the 160 antenna, hope this will not cause a problem in the rig? Here is a very major problem people with slopers should watch for. The sloper uses the tower as the counterpoise, and the tower structure has the same current at the connection point as flows into the sloper wire we call the antenna! If we have three amps of RF into the sloper, the tower is excited with 3 amps also!!! This means the 40 meter antenna on the tower, since it is a major part of the counterpoise for the sloper antenna to work against, has substantial element currents when using the sloper. I would use a disconnect relay with good isolation to disconnect and ground the center conductor of the 40 meter Yagi when using your sloper to transmit! Remember the 40 meter antenna is really a radial system for the sloper. This is a very good way to damage a receiver, and the little low power limiters that are often successful for minor problems should not be trusted in a case like this where one antenna is a directly connected part of the other antenna system. Years ago I measured the 80 meter Inverted V of a friend of mine who had a 160 sloper on the same tower, and he had almost 200 or 300 watts into a dummy load on the 80 meter antenna when using the sloper at 1500 watts on 160. Use a relay Jorge along with a regular small limiter and be sure it is 100% safe to be disconnected before transmitting with a limiter for backup. 73 Tom __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] continuous relay click in RX ANT IN
You are correct. In my case, I am using a ferrite loop on 160 and a short vertical on high bands to provide a second channel for polarization-diversity reception. The main antennas are a vertical on 160, and full size dipoles and a beam on the other bands, which of course I use for transmitting. So the voltage produced by the receiving antennas is relatively low. I agree that it wouldn't work with a resonant antenna. But couldn't you just put several diodes in series, like this: --+--|--|---+-- |--|--|---| if you want a higher clipping level? On 7/12/2010 6:37 AM, Tom W8JI wrote: I made an even more cost-effective one: I put a couple of diodes in parallel (anode to cathode) across the connector in the old coax switch I use for receiving antennas. I wrote FOR RECEIVE ONLY! on the switch in big letters. I can't do that here Vic because on most of my antennas the net power from the antennas results in a peak voltage much greater than 0.5 volts. .5 volts peak, which is the approximate conduction limit of a silicon rectifier like a 1N4007, is only 4 dBm That will turn your K3 into a Yaesu FT-101 for IM and even order performance. 73 Tom -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] continuous relay click in RX ANT IN
Hi Vic, So the voltage produced by the receiving antennas is relatively low. I agree that it wouldn't work with a resonant antenna. On my Beverage antennas (which are low gain) the accumulation of AM BC signals, SW BC signals, and so on at night is enough to light the filament of a 12 volt subminature lamp a dull reddish glow!! Really freaky to watch the filament brightness QSB up at night. But couldn't you just put several diodes in series, like this: --+--|--|---+-- |--|--|---| if you want a higher clipping level? You could, but I probably would not do that for several reasons (mostly related to IM performance and clamping harness). A much better solution is to use a zener-biased shunt clamp with fast diodes and a low current fuse made from a small low voltage lamp, but a voltage source is required to bias the zener. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] continuous relay click in RX ANT IN
Accumulate? So assuming there is 5 volts AC across that bulb, you could install 22 more of these antennas, connect them in series and get 110VAC. This would take the place of our solar cells after sundown! Steve N4LQ - Original Message - From: Tom W8JI w...@w8ji.com To: Vic K2VCO v...@rakefet.com Cc: elecraft@mailman.qth.net Sent: Monday, July 12, 2010 1:06 PM Subject: Re: [Elecraft] continuous relay click in RX ANT IN Hi Vic, So the voltage produced by the receiving antennas is relatively low. I agree that it wouldn't work with a resonant antenna. On my Beverage antennas (which are low gain) the accumulation of AM BC signals, SW BC signals, and so on at night is enough to light the filament of a 12 volt subminature lamp a dull reddish glow!! Really freaky to watch the filament brightness QSB up at night. But couldn't you just put several diodes in series, like this: --+--|--|---+-- |--|--|---| if you want a higher clipping level? You could, but I probably would not do that for several reasons (mostly related to IM performance and clamping harness). A much better solution is to use a zener-biased shunt clamp with fast diodes and a low current fuse made from a small low voltage lamp, but a voltage source is required to bias the zener. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] continuous relay click in RX ANT IN
Hello, I have my beverage connected to the RX ANT IN and I can transmit into my TX antenna while RX ANT is turned on without problem. I tried to connect my 40 mts yagi to RX ANT IN because it was listening very good, but I hear a continuous clicking, like a relay. What´s that? Why with one antenna is OK and with the other I hear this click click click? Any idea? Thanks, Jorge CX6VM/CW5W __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] continuous relay click in RX ANT IN
Jorge, The clicking you hear is the COR (carrier operated relay) on the RX ANT activating to protect the K3 receiver. Your 40 mtr Yagi is picking up much more of your TX signal than the Beverage. You should take steps to reduce the amount of TX signal picked up by the RX ant. 73, Don W3FPR Jorge Diez - CX6VM wrote: Hello, I have my beverage connected to the RX ANT IN and I can transmit into my TX antenna while RX ANT is turned on without problem. I tried to connect my 40 mts yagi to RX ANT IN because it was listening very good, but I hear a continuous clicking, like a relay. What´s that? Why with one antenna is OK and with the other I hear this click click click? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] continuous relay click in RX ANT IN
have my beverage connected to the RX ANT IN and I can transmit into my TX antenna while RX ANT is turned on without problem. I tried to connect my 40 mts yagi to RX ANT IN because it was listening very good, but I hear a continuous clicking, like a relay. What´s that? Why with one antenna is OK and with the other I hear this click click click? Jorge, What band? What is your TX antenna for that band and how far from the 40 meter antenna is the TX antenna? 73 Tom __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] continuous relay click in RX ANT IN
Hi Tom, Seems is the proximity of the antennas. I was using a sloper for 160 mts from a 118ft tower and the 40-2CD was on top of this tower. So I couldn´t connect the 40-2CD in the RX ANT IN. So I switch the knob in my sixpack to listen in the 40 and then switch again to TX on the 160 antenna, hope this will not cause a problem in the rig? Thanks! 73, Jorge CX6VM/CW5W -Mensaje original- De: Tom W8JI [mailto:w...@w8ji.com] Enviado el: Domingo, 11 de Julio de 2010 05:52 p.m. Para: Jorge Diez - CX6VM; 'Elecraft Reflector' Asunto: Re: [Elecraft] continuous relay click in RX ANT IN have my beverage connected to the RX ANT IN and I can transmit into my TX antenna while RX ANT is turned on without problem. I tried to connect my 40 mts yagi to RX ANT IN because it was listening very good, but I hear a continuous clicking, like a relay. What´s that? Why with one antenna is OK and with the other I hear this click click click? Jorge, What band? What is your TX antenna for that band and how far from the 40 meter antenna is the TX antenna? 73 Tom __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] continuous relay click in RX ANT IN
I had this going on too and a really slick way to fix the problem is with an RF limiter... http://www.iceradioproducts.com/reconly.html#rflimiter I.C.E. makes a very cost effective unit that gets the job done very well... I ordered the 196 unit and then I didn't want to have it with RCA connectors on it so I asked them to build it wit the BNC connectors like they do on the VHF unit. They had no problem with that and did so no extra cost. ~Brett (N7MG) On Sun, 2010-07-11 at 18:27 -0300, Jorge Diez - CX6VM wrote: ems is the proximity of the antennas. I was using a sloper for 160 mts from a 118ft tower and the 40-2CD was on top of this tower. So I couldn´t connect the 40-2CD in the RX ANT IN. So I switch the knob in my sixpack to listen in the 40 and then switch again to TX on the 160 antenna, hope this will not cause a problem in the rig? Thanks! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] continuous relay click in RX ANT IN
I made an even more cost-effective one: I put a couple of diodes in parallel (anode to cathode) across the connector in the old coax switch I use for receiving antennas. I wrote FOR RECEIVE ONLY! on the switch in big letters. Oh yes, I also put an ancient low-pass filter between it and the antenna so it would not become a VHF harmonic generator! On 7/11/2010 6:28 PM, Brett Howard wrote: I had this going on too and a really slick way to fix the problem is with an RF limiter... http://www.iceradioproducts.com/reconly.html#rflimiter I.C.E. makes a very cost effective unit that gets the job done very well... I ordered the 196 unit and then I didn't want to have it with RCA connectors on it so I asked them to build it wit the BNC connectors like they do on the VHF unit. They had no problem with that and did so no extra cost. -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
